Example ⟳ +
An example collection, so you can see what this page does. Nothing added here is kept: leaving deletes it.
Rosa roxburghii; photograph Averater, CC BY-SA 3.0, via Wikimedia Commons CC BY-SAAverater, CC BY-SA 3.0, via Wikimedia Commons

Rosa roxburghii Tratt.

Chinquapin rose; Chestnut rose; Burr Rose

Rosaceae · China South-Central, China North-Central +3 · listed by its genus as a temperate garden plant

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Rosa roxburghii, photograph author not stated, no rights reservedRosa roxburghii, photograph Averater, CC BY-SA 3.0, via Wikimedia CommonsRosa roxburghii, photograph Averater, CC BY-SA 3.0, via Wikimedia CommonsRosa roxburghii, photograph Daderot, CC0, via Wikimedia CommonsRosa roxburghii, photograph Salicyna, CC BY-SA 4.0, via Wikimedia CommonsRosa roxburghii, photograph Salicyna, CC BY-SA 4.0, via Wikimedia Commons 13 photographs ›
Habitat figuresfrom few records
Cold floor (1 night in 100)
-5.6°C
Record low -11.2 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
28°C
Jul and Aug at the habitat CHELSA
Rain a year (median across the range)
1,592mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
14–30DLI
Lowest to highest month (DLI) CHELSA
The year in your months, northern hemisphere
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
Wet summers: the rain comes April to September, read as a summer growing season. rain rule, CHELSA
Northern hemisphere unless you set your site. The chart is in the habitat's months.

From few records: 3 records in 3 grid cells. The records.

Summary

Rosa roxburghii (burr rose, chestnut rose, chinquapin rose, or cili), is a species of flowering plant in the family Rosaceae, native to the eastern Himalayas, Tibet, and central and southern China. In the wild, it is found in thickets, mountain forests, on slopes, and alongside streams, typically 500 to 1,400 m (1,600 to 4,600 ft) above sea level. A diffuse shrub capable of reaching 8 m (26 ft) but usually shorter, it is available from commercial suppliers. In China, it is cultivated for its vitamin C-rich hips on 170,000 ha (420,000 acres), mostly in Guizhou.

Quoted from Wikipedia, "Rosa roxburghii", CC BY-SA 4.0.

Cultivation

Grouped as a temperate garden plant, listed under the genus Rosa in the archetype table, and Kew describes it as “shrub”, “temperate”.

Seasons

The rain rule reads a summer growing season: 70% of the median year's rain (1,132 mm of 1,469 mm) falls in April to September, warmer than the year (wet-season mean 21.2 °C against a yearly mean of 14.8 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: October to March.

Rain

1,469 mm in the median year at the habitat, 1,132 mm of it April to September. Wettest month June at 251 mm, driest month January at 30 mm. Across the grid cells of the range the year's total runs 1,444 mm to 1,620 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 1,592 mm, is the year's rain at the top of the page; the 1,469 mm here is the median year's, the twelve monthly medians added, which the rain rule reads. Habitat calendar, northern hemisphere; median year across the grid cells of the range, CHELSA.

Light

Open sky over the habitat: 14 to 30 mol/m²/day across the year (daily light integral, median year across the grid cells of the range, CHELSA; the lowest 10th-percentile month across the cells is 12, the highest 90th-percentile month 37).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is -5.6 °C, the absolute minimum -11.2 °C, 2,417 frost nights in 44 years, 54.9 a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 31.6 °C. Monthly means: the coldest month's mean nightly low -0.5 °C in January (across the grid cells of the range -4.5 °C to 0.0 °C), the warmest month's mean daily high 27.5 °C in July and August (median year across the grid cells of the range, CHELSA). Cold floor: -5.6 °C, which is the 1st-percentile night over 44 years at a typical spot in the range (NASA POWER).

Humidity

Relative humidity at the habitat: 62 to 68% across the year (monthly means, median year across the grid cells of the range, CHELSA). A figure about the air, saying nothing about how the plant takes water.

How this section is made

Each card states this species' habitat figures with their sources, and what two fixed rules read from them; nothing here says what the plant does, wants or tolerates. The rules · the terms.

Seasons. Read from the median year of CHELSA monthly rainfall and mean temperature across the grid cells of the range: the rain rule takes the smallest set of months carrying 70% of the rain and calls it winter when its mean is more than half a degree below the year's, summer when more than that above, and neither in between; the temperature rule, used only under 120 mm, names the cooler six months when they are at least a degree cooler than the other six. Months are shifted for the other hemisphere only where the temperature curve moves 4 °C or more and the habitat lies 10° or more from the equator. A reading of the curves, not an observation of the plant.

Rain. CHELSA monthly precipitation, median year across the grid cells of the range. The rain that falls where the species is recorded; nothing about how the plant takes water.

Light. CHELSA shortwave radiation at each envelope cell, a daily-mean flux taken to a daily total and converted at 2.07 mol of PAR per MJ. The sky over the habitat, measured; what reaches a plant under a rock, a shrub or a shade cloth is not.

Temperature. NASA POWER daily minima and maxima over 44 years at a typical spot in the range, lapse-corrected +70 m to its elevation; CHELSA monthly means, median year across the grid cells of the range. The cold floor is the 1st-percentile night named in its sentence. Not a measured survival limit for any plant in a pot.

Humidity. CHELSA relative humidity, median year across the grid cells of the range.

Group. Listed under the genus Rosa in the archetype table, and Kew describes it as “shrub”, “temperate”. A group is taken only where Kew's description of the species agrees with the table's listing. The table gives no figure and no prose; the cold floor is the habitat's alone.

Climate across the habitat

From few records: this habitat climate is read from 3 records in 3 grid cells; a page says so under 12 records or 5 cells, and shows the figures as read.

Habitat months, northern hemisphere

Habitat climate of Rosa roxburghii through the yearWarmest months July and August, mean daily high 28 °C; coldest month January, mean nightly low -0.5 °C; 1,469 mm of rain in the median year (the twelve monthly medians added). Medians across the range, from CHELSA; the extremes at the edge from NASA POWER. Habitat months, northern hemisphere.-20°-10°0°10°20°30°40°frost31.6° 99th-percentile day, NASA POWER-11.2° lowest night in 44 years, NASA POWER°C · day and nightcold quarter0100200300400mm rainDLI 14–30RH 62–68%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 3 habitat cells, CHELSA cold quarter: the three months around the coldest month's mean nightly low extremes over 44 years at a typical spot in the range, from NASA POWER, marked at the edge, in no month DLI, mol/m²/dayRH %each on its own scale
Figures by month
JanFebMarAprMayJunJulAugSepOctNovDec
Day °C6 / 6–68 / 8–812 / 11–1318 / 15–1822 / 19–2325 / 20–2628 / 20–2828 / 20–2824 / 17–2418 / 14–1913 / 10–148 / 7–8
Night °C-1 / -5–01 / -3–25 / 0–511 / 4–1115 / 9–1518 / 12–1921 / 13–2120 / 12–2117 / 10–1712 / 7–127 / 1–72 / -3–2
Rain mm30 / 15–4833 / 19–5657 / 37–84132 / 56–166202 / 130–235251 / 232–275249 / 214–376172 / 153–315126 / 96–226121 / 105–12665 / 30–7331 / 12–36
DLI14 / 13–2515 / 14–3018 / 17–3422 / 21–3726 / 25–3627 / 26–2929 / 26–3130 / 28–3124 / 24–2517 / 15–2315 / 13–2314 / 12–23
RH %64 / 56–6865 / 57–6765 / 58–6764 / 58–6664 / 60–6668 / 66–6867 / 66–7265 / 65–7166 / 63–7266 / 63–6862 / 60–6762 / 56–68
How this section is made
Each figure is the median across the 3 grid cells on land that hold in-range records (3 records in those cells; 1 more cell holds records but no land by the elevation layer, so those records sit at sea and the cell is left out), with the 10th–90th percentile span across those cells after the slash where it differs. A dash is a month one or more of those cells has no figure for in the grid (a variable CHELSA does not carry there), so no median is taken rather than one over fewer cells. Extremes and elevation were read at a typical spot in the range, cell 1232:5790 (28.375, 109.525). Over 44 years there: absolute minimum -11.2 °C, 1st-percentile night -5.6 °C, 99th-percentile day 31.6 °C. Normals: CHELSA V2.1 1981–2010 climatology, 0.05° cells (each the mean of ~36 1 km pixels). Across the range: median and 10th–90th percentile of each month across the 3 distinct grid cells holding 3 of the 4 in-range records (1 further cell with records at sea, by the elevation layer, left out); extremes and elevation at the typical cell 1232:5790 (its coldest month's mean nightly low nearest the median across cells); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell 28.50_109.375, lapse-corrected +70 m at 6.5 °C/km. Elevation: ETOPO 2022, 671 m (cell mean).

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing: the climate was read across the cells of the in-range records placed well enough to read one, not at the marker.
Openly licensed records inside the range, framed on where they fall.
NativeChina South-Central, China North-Central, China Southeast, Tibet, East Himalaya · introduced: Assam, West Himalaya · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Map marker28.564, 108.504 · in the densest population, 271 records (79% of those in range)
Kew's description“shrub” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 343 georeferenced records inside the native range; the climate across the range on the 3 of them in the land cells it reads, of 4 placed to within 10 km; the map shows only the 169 openly licensed ones, which alone would put the marker 40 km away. 19 records outside the WCVP native range not used. Under a dozen records behind the climate. 339 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
Other GBIF keysRecords also from GBIF's key 7647730 (Rosa microphylla Lindl.): Kew's file holds it as Rosa microphylla Roxb. ex Lindl. (illegitimate under Rosa roxburghii Tratt.); 1 record, from GBIF's search API on the day of the build.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population inside the densest 4° block of the 343 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Rosa roxburghii, photograph 1did not loadRosa roxburghii, photograph 2did not loadRosa roxburghii, photograph 3did not loadRosa roxburghii, photograph 4did not loadRosa roxburghii, photograph 5did not loadRosa roxburghii, photograph 6did not load

Photographs: author not stated, no rights reserved · CC0; Averater, CC BY-SA 3.0, via Wikimedia Commons (2); Daderot, CC0, via Wikimedia Commons; Salicyna, CC BY-SA 4.0, via Wikimedia Commons (2).

Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.

Rubus setchuenensis Rosaceae Lysimachia paridiformis Lysimachia paridiformis Primulaceae Photo: CC0, StickpenLilium henryi Lilium henryi Henry's lily Photo: Public domain, Davids HercbergsCitrus cavaleriei Citrus cavaleriei Ichang papeda Photo: CC BY-SA, David J. StangLilium rosthornii Lilium rosthornii Liliaceae Photo: CC BY-SA, Denis BarthelAcer fabri Acer fabri Faber's Maple Photo: CC BY-SA, Krzysztof Golik

Other Rosa 126 in the reference

Rosa abietina Rosa abietina Needle rose Photo: CC BY-SA, michele barrereRosa abyssinica Rosa abyssinica Abyssinian rose Photo: CC BY, Jacky JudasRosa acicularis Rosa acicularis Prickly rose Photo: CC BY, Syd CanningsRosa agrestis Rosa agrestis Small-leaved Sweet-briar Photo: CC BY, Bobo-XRosa × alba Rosa × alba White rose of York Photo: CC BY, jamie-aaRosa alberti Rosa alberti Rosaceae Photo: CC BY, Alexander DubyninRosa amblyotis Rosa amblyotis Rosaceae Photo: CC BY-SA, Salicyna Rosa × andegavensis Rosaceae Rosa arkansana Rosa arkansana Prairie rose Photo: CC0, author not statedRosa arvensis Rosa arvensis Field rose Photo: CC BY, David SandlerRosa balsamica Rosa balsamica Round-leaved dog-rose Photo: CC BY-SA, Andrea MoroRosa banksiae Rosa banksiae Banksian rose Photo: CC BY, Janetmhm all 127 ›

Names & registers

Also known as Juzepczukia microphylla; Juzepczukia roxburghii; Platyrhodon macrophyllum; Platyrhodon microphyllum; Rosa centifolia and 12 more. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Rosaceae
Described by
Tratt.
Native to
China South-Central, China North-Central, China Southeast +2
Wild records
343 in range · 169 open

Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →

Where this page came from built 2026-10-22
GBIF species record gbif.species answeredasked 2026-10-22
GBIF synonyms gbif.synonyms answeredasked 2026-10-22
GBIF common names gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredasked 2026-10-22GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 1 record of GBIF's key 7647730, Rosa microphylla Lindl. (Kew's file holds it as Rosa microphylla Roxb. ex Lindl. (illegitimate under Rosa roxburghii Tratt.)): GBIF occurrence search API; 15 records within 1 km of a botanic garden, herbarium or zoo left out (11 at a botanic garden or arboretum, 4 at a zoo; Wikidata's list)
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 28.50_109.375, lapse-corrected +70 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22IPNI and POWO linked by Kew's number for Rosa roxburghii Tratt. (the item's: IPNI 734057-1, POWO 734056-1)
Wikipedia wikipedia answeredasked 2026-10-22
iNaturalist photographs, wild inat.photos.wild answeredasked 2026-10-22from iNaturalist's open data of 2026-09-27: research-grade observations with an open-licence photograph, the 24 whose photographs iNaturalist received last (the open data holds no votes); filled 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media answeredasked 2026-10-22none of the photographs on this page is credited to GBIF: those shown are other sources', and GBIF's were the same photographs or were set aside by the photograph rules
Wikimedia Commons commons answeredasked 2026-10-22
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 28 datasets via GBIF.org; each carries its own licence.

Cultifolio

Opening your plants…